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Fan Wang, Mingxiang Geng, Anyang Bao, Yujie Lv, Pengru Huang, and Dongming Liu, Porous (Cu, Ni)/Cu2O heterostructure-induced destabilization of LiBH4 for reversible hydrogen storage, Int. J. Miner. Metall. Mater., (2026). https://doi.org/10.1007/s12613-026-3439-0
Fan Wang, Mingxiang Geng, Anyang Bao, Yujie Lv, Pengru Huang, and Dongming Liu, Porous (Cu, Ni)/Cu2O heterostructure-induced destabilization of LiBH4 for reversible hydrogen storage, Int. J. Miner. Metall. Mater., (2026). https://doi.org/10.1007/s12613-026-3439-0
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Porous (Cu, Ni)/Cu2O heterostructure-induced destabilization of LiBH4 for reversible hydrogen storage

Abstract: LiBH4, a solid-state hydrogen storage material with ultra-high theoretical hydrogen capacity, is seriously hindered for the practical applications by its high thermodynamic stability and slow hydrogen desorption kinetics. Herein, the dehydrogenation properties of LiBH4 are remarkably improved by confinement in the porous (Cu, Ni)/Cu2O heterostructure (np-(Cu, Ni)/Cu2O), which was achieved using a novel two-step method containing delloying of Mg-Cu-Ni precursor alloy to form the porous (Cu, Ni) solid solution, followed by micro-oxidation under air conditions. Hydrogen release from the constructed LiBH4@np-(Cu, Ni)/Cu2O (1:2) system begins at approximately 80°C and ends before 380°C, with 12.5wt% of hydrogen desorbed. Moreover, the apparent dehydrogenation activation energy has been reduced to 44.2 kJ/mol. After rehydrogenation at 400°C under 8 MPa hydrogen pressure, the LiBH4@np-(Cu, Ni)/Cu2O (1:2) system can release 3.6wt% of hydrogen during the second dehydrogenation process. These findings show that the synergistic effect of confinement and heterostructure catalysis provided by the porous metal derivatives can greatly enhance the hydrogen storage properties of LiBH4.

 

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